specify 'default' namespace when fetching ClusterServiceVersion status

specify 'default' namespace when fetching ClusterServiceVersion status as some environments (i.e. Minishift) may not scope to 'default' project/namespace by default.

Author: madorn

README.md

@@ -128,7 +128,7 @@ Deploying an Operator is as simple as applying the Operator’s manifest to the
 ```sh
 $ curl -Lo memcachedoperator.0.0.1.csv.yaml https://raw.githubusercontent.com/operator-framework/getting-started/master/memcachedoperator.0.0.1.csv.yaml
 $ kubectl apply -f memcachedoperator.0.0.1.csv.yaml
-$ kubectl get ClusterServiceVersion-v1s memcachedoperator.v0.0.1 -o json | jq '.status'
+$ kubectl -n default get ClusterServiceVersion-v1s memcachedoperator.v0.0.1 -o json | jq '.status'
 ```
 
 After applying this manifest, nothing has happened yet, because the cluster does not met the requirements specified in our manifest. Create the CustomResourceDefinition and RBAC rules for the Memcached type managed by the Operator: